I think the problem being pointed out by the other poster is that your bogus math calculations are not even consistent with the most basic laws of physics. Hang on a minute, that has nothing to do with maths. You're essentially implying something which was demonstrably done, couldn't have been done, on the basis that you do not know how it was done. Every one of your questions has a million different possible answers. It's as if you think workers at the WTC were on the lookout for terrorists planting thermite charges. Or that they even knew what thermite charges were. Or that the terrorists wouldn't have had a plan about how to get explosives inside without anybody noticing. OMG this is just ridiculous. You talk about maths, and then exclusively rely on fallacies of language which contradict basic physical law. Both WTC buildings were struck horizontally, way above their centre of gravity. Build a house of cards, punch five sixths of the way up, and tell me if the area where you have punched falls straight down.